Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
thanh phan » thanh pho, thanh san, thanh toan
phan gian » phan giai, phan giay, phan gia
gian dan » gian lang
dan cong » dang cong, van cong, dan dong
cong dan » cong san, cong tan, huong dan
phan lap » phan dau
phan van » pham van, thanh van, luan van

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - thanh phan gian dan cong dan ((phan lap) OR (phan van))~.
• Adding a wildcard symbol may retrieve word variants: toc thieu hach - thanh phan gian dan cong dan ((phan lap) or (phan van))*.